Add comment why we check for config presence
Add comment why we check for config presence

Signed-off-by: Aaron Hurley <6c541e38cb40b4360b80e64c308405691f38e38a@pivotal.io>

Altoros/bosh-agent,pivotal-nader-ziada/bosh-agent,gu-bin/bosh-agent,alex8023/bosh-agent,tacgomes/bosh-agent,cloudfoundry/bosh-agent,mattcui/bosh-agent,uzzz/bosh-agent,tacgomes/bosh-agent,alex8023/bosh-agent,mattcui/bosh-agent,gu-bin/bosh-agent,alex8023/bosh-agent,evanfarrar/bosh-agent,karafelix/bosh-agent,karafelix/bosh-agent,allomov/bosh-agent,uzzz/bosh-agent,allomov/bosh-agent,Altoros/bosh-agent,pivotal-nader-ziada/bosh-agent,Altoros/bosh-agent,cloudfoundry/bosh-agent,karafelix/bosh-agent,evanfarrar/bosh-agent,gu-bin/bosh-agent,mattcui/bosh-agent,tacgomes/bosh-agent,evanfarrar/bosh-agent,pivotal-nader-ziada/bosh-agent,allomov/bosh-agent,uzzz/bosh-agent